Spark-arrester



(No Model.)

J. Q. DONNALD. SPARK ARRESTER.

No. 411,327. Patented Sept. 17, 1889.

67272 @1707? na Zd .venient reach of the operator.

UNTTED STATES PATENT OFFICE.

JOHN QUTTMAN DoNNALD, or nAETwELL, GEORGIA;

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 411,327, datedSeptember 17, 1889.

Application filed June 14, 1889. Serial No. 314,184. (No model) To allwhom z' may concern.

Be it known that I, JOHN QUITMAN DON- NALD, a citizen of the UnitedStates, residing at Hartwell, in the county of Hart and State ofGeorgia, have invented a new and useful SparlcArrester, of which thefollowing is a specification.

My invention relates to improvements in spark-arresters; and it consistsin certain novel features hereinafter described and claimed.

In the accompanying drawings, Figure l is a perspective View of myimproved sparkarrester. Fig. 2 is a vertical section of the same. Figs.3 and 4 are detail perspective views of the deiiecting or arrestingplates, the lower one being inverted.

My improved spark-arrester is constructed in two sections A B, which aresubstantially conical in form and are connected together at their basesby a hinge C and a latch D of any desired construction. The lowersection or member A is provided with a cylindrical extension E, which isadapted to lit over the end of the smoke-pipe, and the upper member B isprovided with a cylindrical collar F, through which the smoke escapes,as will be readily understood.

The member A is provided near its lower end with a cinder-discharginspout G, which extends downward and out-ward from its side, and the saideinder-discharging spout is provided at its end with a door Il, which isweighted at its lower end, so as to be normally closed, and is providedwith an upwardly and inwardly extending arm I, to which acord J issecured, the said cord extending downward, so as to be within con- Bydrawing downward on this cord the door will be raised so as to allow thecinders to escape, and the end of the arm I is provided with an elasticVbuffer K, which will be forced against the side of the casing of thedevice when the door is raised, and thereby caused to shake the saidcasing so as to loosen the cinders and vsoot and cause the same to fallout through casing of the device adjacent to the said spout, as shown inFig. 2.

Within the upper member Il, I provide the detlecting or arresting platesM N O Ras shown. The plate M is substantially conical and is perforated,and is supported by means of the arms Q, which have their lower endssecured to the said defleeting-plate M and their upper ends secured tothe inner edge of the plate N. The plate M is considerably less indiameter than the casing, so as to leave an annular space between itselfand the casing, and thereby maintain the draft, and the plate N is ofproper external diameter to fit snugly within the casing, and isprovided in its edge with the notches R, adapted to clear the studs S onthe inner side of the casing when securing the plate in position. Theplate O is arranged directly over the central opening in the plate N andis similar in" construction to the plate M. The said plate O is securedto the plate P by-the arms T, which are similar in construction to thearms Q, and the said plate I) is supported within the casing by means ofthe springarms U, which extend upward through the casing and engage theupper edge of the collar F, as clearly shown.

From the foregoing description, taken in connection with theaccompanying drawings, the operation and advantages of my device will,it is thought, be understood. The products of combustion pass from thesmokestaek up through the spark-arrester, and the smoke will be allowedto pass therethrough and escape from the upper end of the same. Thesparks, however, will be arrested in their movements and caused to fallback to the lower end of the device by the arresting or deilectingplates and will accumulate within the discharge-spout G until allowed toescape therefrom in the manner described. Then it is desired to cleanthe device or to repair the deflecting-plates, the upper member is swungover on the lower member. The plate N is then partially rotated, so asto bring the notches R into alignment with the studs S, when the saidplate and the plate M can be easily lifted out. The plates O P can beremoved by disengaging the spring-arms U from the collar F and thensimply lifting the IOO plates from the easing. In inserting the platesinto the casing the plates O P are pushed through the casing until thespringarms Q automatically engage the collar F, and the plates N M arethen inserted and pushed past the studs, after which they are partiallyrotated so as to be supported bythe studs.

My device is Very simple and efficient and its advantages are thought tobe obvious.

Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. The combination, with the casing, of the delecting-plate P, the plateO, supported by said plate P, and the spring-arms U, rising from thesaid plate P and adapted to engage the upper end of the casing, as setforth.

2. The combination of the casing having the studs S, the plate N, havingnotches R in its edge adapted to clear said studs, and the plate M,supported by the said plate N, as set forth.

3. The combination of the casing having a discharge-spout near its lowerend, the weighted door in said discharge-spout, the arm rising from saiddoor, the elastic buffer on the end of the said arm, and the cordsecured to and extending downward from the door, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

JOHN QUITMAN DONNALD.

Witnesses:

W. Y. HOLLAND, S. W. PEEK.

